She had a nose job.
Her attempt at starting her own line of perfume fragrances failed.
She hasn't had a steady entertainment job since 2009, due to a 'problematic personality.'
She married 43-year old Roberto Justus when she was 25 (they divorced eight months later).
She has built a television career off of being Ayrton Senna's 'last girlfriend.'
She was disliked by Senna's family, who much preferred his longtime-girlfriend, Xuxa.
She was accused of cheating on Ayrton in the weeks leading up to his crash.
Her relationship with Senna was more a matter of convenience (one of Senna's friends picked out of sever Grand Prix 'umbrella models' to be a 24-hour paid companion for him - Senna preferred another but was told she would be more 'manageable').
She frustrated Senna by pulling stunts to harm his image, for example shooting a series of risqué photos for Caras Magazine in March of 1994 (including one very embarrassing poolside shot of the two that made him appear to be both nude and getting blown).
Rumors were - and still are - abound that Senna had planned to break up with her after the San Marino Grand Prix (he had as much admitted in magazine interviews that he didn't love her).
She waited less than five months to sell Senna's entire private life to the press in a widely-publicized 'tell all' (continuing to share personal details in world-wide exclusives for cash).

Why she might not be annoying

Her father passed away when she was 15.
She lost her brother to AIDS, when he was 28.
She had a year-long fling with Brazillian footballer, Roger Galera Flores, in 2008.
She claimed to have advised Senna not to race in the Imola Grand Prix on the day of his death.
Senna's family tended to come off as elite snobs around her (not even allowing her to sit with them at his funeral, although they welcomed Xuxa with open arms).
That any tension existed between the two never came off in public (they made for a very photogenic couple).
A Senna biographer's claim to be in possession of tapes of private conversations between her and a secret lover is widely believed to be a hoax.
She admitted in later interviews that she couldn't see herself marrying Ayrton (not that the 14 year age difference would have stopped her).
She later said of Ayrton: 'He was more than a champion. He had an enormous heart, a simple way of life and had simple dreams. He was entertaining. At home, he was like a child. He was full of happiness.'